public class Test01 {
    public static void main(String[] args) {
    String s1=new String();
    System.out.println(s1);
    char[] chs ={'a','b','c'};
    String s2 =new String(chs);
    System.out.println(s2);
    String s3=new String("123");
    System.out.println("s3="+s3);
    for (char c : chs) {
        
    }
}
}